Engine starter



H. COUILLARD.

HLM CEMENT HOLDER AND SPREADER.

APPLICATION HLED OCT. 28; 1920.

Patented 1160.27, 1921.

DDDDDyDDUDDDUDUDD Oaaaaanaaaaaaaaa annu'auacruauaaauaan E/VR/ COU/LLA/ZW UNITED STATES PATENT OFFICE.

ALVIN E. BUOHENBERG, OF TOLEDO, OHIO, ASSIGNOR 'lO' INDUSTRIAL RESEARCHCORPORATION, OF TOLEDO, OHIO, A CORPORATION OF DELAWARE.

ENGINE STARTER.

Specification of Letters Yatent. Pat t d A 18 1922 Application filedApril 14,1919. Serial No. 289,951.

To all whom it may comer n:

Be it known that I ALVIN E. BUoHnN- BERG, a citizen of the IInitedStates, residing at Toledo, in the county of Lucas and State of Ohio,have invented certain new and useful Im rovements in Engine Starters, ofwhich declare the following to be a full, clear, and exact description.

This invention relates to improvements in starters for internalcombustion engines, and consists principally in the employment of anelectro-magnet for carrying the movable pinion which engages thefly-wheel, said electro-magnet when energized moving toward thefly-wheel, which is composed of I ma netic material.

no of the objects of the invention is the provision of means forautomatically engaging and disengaging the starting gears, when thedriving motor is started and stopped.

nother object of the invention is the provision of means foraccomplishing the gear shiftin operation electro-magnetically.

Anot erobject is the provision of a single means for starting the drivinmotor, and

for completin the circuit 0 the electromagnet, whic means may be merelya switch where an electric motor is used for starting.

Still another object is the mounting of the driving pinion in anintermediate position upon a lever which is pivoted at one end,

and has at least one pole of the electromagnet at its other end, wherebythe pull of the magnet at the end of the lever produces aproportionately stronger eiiect at the point of the pinion mounting,

Other objects, and objects relating to details of construction, andeconomies of manufacture will a pear as I proceed with the descriptionof t at embodiment of the invention, which, for the purposes of thepresent application, I have illustrated in the accompanying drawings, inwhich:

Figure I is a top plan view partly in cross section, showing anembodiment of my invention, a fra ment only of the engine flywheel beingifiustrated.

Fig. II is an end view of the invention as seen from the left in Fig. I.

Fi III is a cross section taken substantially on the line III-J11, Fig.I, and lookin in the direction of the arrows.

Tig. IV is a diagram showing the preare wound around the pole shoes 19..

ferred arrangement of electrical apparatus and connections.

Similar reference characters refer to like parts in each of the views.

In the drawing, 10 represents an electric motor of the series woundtype, the armature shaft 11 having fixed thereupon a pinion 12. The twoarms of a yoke 13 straddle the pinion 12, and these arms are .drilledout to receive loosely the shaft 11, which, therefore, forms a pivot forsaid yoke. The latter has rotatably mounted therein a second shaft 14upon which is fixed a pinion 15 meshing with the pinion 12. The shaft 14also has fixed thereto a pinion 16 which rotates in a slot 17, formed inone arm of the yoke 13. The teeth of the pinion 16 are adapted to meshwith teeth 27 on the engine fly-wheel 18.

That arm of the yoke 13 in which the pinion 16 is mounted, constitutesan electromagnet. Near its ends pole shoes 19 extend toward thefly-wheel 18, beingshaped upon their lower surfaces to conform as nearlyas possible to the shape of the adjacent surfaces. of the fiy-wheel. Themagnet coils 20 As diagrammatically shown in Fig. IV, these coils 20 maybe arranged in series with the motor 10, its field winding 21, asuitable source of electric current, such as a storage battery 22, and aswitch 23. When the switch 23 is closed a current passes through themotor and through the coils 20 of the electro-mag'net. As the latterbecomes energized it moves toward the fly-wheel, causing the pinion 16to engage with the teeth 27. In order to retract the pinion 16 whencurrent has ceased to flow through the coils 20, a tension spring 24.-may be attached to the free end of the yoke 13, the opposite end of thespring being secured to any convenient support.

Instead of the pinion 16, a drive wheel of somevother type may beemployed if desired, and, similarly, the teeth 27 upon the flywheel mayomitted altogether, or, if desired, some other type of teeth may beused. Furthermore, the number of gears or pinions in the yoke 13 may bedecreased or increased without departing from the spirit of myinvention. l

I am aware that the particular embodiment of my invention abovedescribed, and illustrated in the accompanying drawings, is susceptibleof considerable variation without departing from the spirit thereof, andtherefore I desire to claim my invention broadly, as well asspecitically, as indicated by the appended claims.

I claim as my invention:

1. In combination with the fly-wheel of an internal combustion engine,said fly-Wheel being built of magnetic material and provided with gearteeth along its periphery, a motor. a shaft therefor, an electro-magnetradially pivoted upon said shaft and capable of a. limited amount ofswinging motion thereon towaivls and away from said flywheel, the polesof said magnet facing said fiy-wheel and in juxtaposition therewith, apinion carried by said magnet and driven from said motor shaft, saidelectro-magnet when energized being drawn towards the said fly-wheeluntil said inion meshes with the teeth on the fly-Wheel? 2..Incombination with the fly-wheel of an internal combustion engine, saidflywheel being built of magnetic material and provided with gear teethalong its periphery, an electric motor, an electro-magnet pivotallymounted concentric to the axis of said motor to have a limited swingingmove-.

ment about that axis towards and away from said fly-Wheel, the poles ofsaid magnet facing said fly-wheel and in juxtaposition therewith, asource of electric current, electrical connections therefrom to said m0-tor and electromagnet, a pinion carried by said electro-n'lagnet anddriven by said motor, and means for completing said electricalconnections.

3. In combination With the fly-wheel of an internal combustion engine.said lywheel being built of magnetic material and provided with gearteeth along its pcriphl cry, a motor, an clectro-magnet pivotallymounted concentric to the axis of said motor, the poles of which facesaid fly-wheel and lie close thereto, a pinion mounted between the pivotof the electro-magnet and the outer one of said poles, and a drivingconnection between said pinion and said motor, said electro-magnet whenenergized being swung towards said fly-wheel about said axis until theteeth of the fiy-wheel are engaged by said pinion.

4. In a drive mechanism, the combination of a driven member formed ofmagnetic material; a motor shaft; an electro-magnet mounted on the shaftfor radial pivotal movement thereabout; a gear carried by theelectro-magnet. and operatively connected to the shaft; and means formagl'ietically energizing the electro-magnet and a portion of saiddriven member.

5. In a drive mechanism, the combination of a driven member formed ofmagnetic material; a motor shaft; an electro-magnet mounted on the shaftfor radial pivotal movement thereabout; a gear carried by theelectro-magnet and movable into engage ment with the driven member; saidelectroinagnet being positioned in juxtaposition with the engine memberbut non-contraetible therewith.

In testlmony whereof, I afiix my signature.

ALVIN E. BUCHENBERG.

